The school was founded in 1901 by Canon Thomas Wesley Powell, Rector of St. Clement's Church, and was originally co-ed, but switched to being all-girls after the First World War.

In 2006, the school completed a new addition to the building which doubled the size of the school: the addition was funded by the Bigger Blazer Campaign.

The renovation included a new gym, performance hall, library and many other improvements.

In 2024, the school completed an additional renovation in which they added additional spaces equal to about half of the size of the existing building.

The new renovation includes a renovated and enlarged library, a computer and robotics lab, a cafeteria, and additional working spaces.